CN210394491U - Continuous pickling leveling galvanizing combined unit - Google Patents
Continuous pickling leveling galvanizing combined unit Download PDFInfo
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- CN210394491U CN210394491U CN201921434947.8U CN201921434947U CN210394491U CN 210394491 U CN210394491 U CN 210394491U CN 201921434947 U CN201921434947 U CN 201921434947U CN 210394491 U CN210394491 U CN 210394491U
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Abstract
The utility model discloses a continuous pickling levels zinc-plating combined unit belongs to a steel production facility, include pan feeding operation unit, broken phosphorus operation unit, pickling and rinsing operation unit, level operation unit, heating operation unit, galvanizing operation unit, cooling operation unit, draw and rectify operation unit, passivation operation unit and ejection of compact operation unit that link to each other through conveyer order. Compared with the prior art, the production cost is reduced on the basis of ensuring the technical effect of the product.
Description
Technical Field
The utility model relates to a hot-galvanize equipment of using, especially have the continuous pickling that uses among the hot-galvanize technology of flower to thickness more than or equal to 2.0mm and level zinc-plating combined unit.
Background
The galvanized product has good comprehensive performances such as corrosion resistance, formability, weldability, paintability and the like, and is widely applied to industries such as automobiles, household appliances and the like. In recent years, studies have been focused on trial production of hot-rolled substrates for galvanization from the viewpoint of energy saving and environmental protection. The traditional cold-rolled base plate zinc plating is produced through two processes, the thickness specification is less than or equal to 2.0mm, firstly, a hot-rolled coil is rolled into a cold-rolled base plate product through the processes of pickling and rolling by a rolling mill through a pickling combined unit; then the cold-rolled substrate is transported to a galvanizing raw material warehouse and is produced into a galvanized product through a degreasing and galvanizing process of a continuous annealing galvanizing unit process. The hot-rolled substrate galvanizing uses a hot-rolled pickling coil to replace a cold-rolled coil as a galvanized substrate, a cold-rolled rolling process is omitted, cold-rolled work hardening is not carried out, but the traditional hot-rolled substrate galvanizing is produced through two processes, and firstly, the hot-rolled coil is produced into a pickling product through a pickling unit process; then the acid-washed product is transported to a galvanizing raw material warehouse and is produced into a galvanizing product through a degreasing and galvanizing process of a continuous annealing galvanizing unit process. The two traditional galvanizing processes have the link of frequently transporting steel coils, the production period is long, the production efficiency is low, the strip steel is subjected to recrystallization annealing in the galvanizing process, the annealing temperature is more than or equal to 680 ℃, the cold-rolled substrate galvanizing process is further rolled by a rolling mill, the compression ratio is more than 80%, the energy consumption is high, and the production cost is high.
SUMMERY OF THE UTILITY MODEL
The technical task of the utility model is to provide a continuous pickling leveling galvanizing combined unit used for hot base plate with thickness more than or equal to 2.0mm and used in hot galvanizing process aiming at the defects of the prior art.
The technical proposal of the utility model for solving the technical problem is that: a continuous pickling leveling galvanizing combined unit is characterized by comprising a feeding operation unit, a phosphorus breaking operation unit, a pickling and rinsing operation unit, a leveling operation unit, a heating operation unit, a galvanizing operation unit, a cooling operation unit, a straightening operation unit, a passivating operation unit and a discharging operation unit which are sequentially connected through a conveying device; wherein the phosphorus breaking operation unit comprises a phosphorus breaking machine; the pickling and rinsing operation unit comprises a pickling tank, a rinsing section and a dryer; the leveling operation unit comprises a leveling machine; the heating operation unit comprises an induction heating furnace and a hot stretching chamber; the galvanizing operation unit comprises a galvanizing pot and an air knife; the withdrawal and straightening operation unit comprises a withdrawal and straightening machine; the passivation operation unit comprises a roller coating passivation device.
The feeding operation unit comprises an uncoiler, an inlet shear, a welding machine and an inlet loop.
The pickling tanks are two pickling tanks, and the total length is 50 meters; the rinsing section is a 5-stage rinsing section.
The discharging operation unit comprises an outlet loop, an outlet shear and a coiling machine.
In an optimized scheme, an inspection table is further arranged between the outlet loop and the outlet scissors.
For the finishing product, the unit also comprises a finishing operation unit.
The finishing operation unit comprises a finishing machine.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model relates to a continuous pickling leveling galvanizing combined unit, which is used for producing thick hot base plate figured galvanized plates. The utility model discloses with regard to a process unit, hot rolling coil directly gets into galvanizing furnace after pickling levels behind the induction coil heating behind the galvanizing and surface treatment becomes the galvanizing product, and belted steel does not take place to anneal through the crystallization again. The cold rolling process is omitted, the cold rolling process is not hardened, the link of transporting the steel coil between the processes is omitted, the production efficiency is high, and the production cost is greatly reduced;
2. the utility model adopts the induction coil to heat in the galvanizing furnace, the heating temperature is low, the strip steel is not recrystallized, the energy consumption is reduced, and the production cost is greatly reduced compared with the traditional cold rolling basic galvanizing production cost;
3. the utility model adopts the domestic pioneering double-leveling, double-straightening and induction heating furnace process, improves the production efficiency and realizes the production of galvanized products with the same raw material and different strength levels;
4. the thickness specification of the galvanized product produced by the process and the equipment is expanded to 0.8-4.0mm, and the produced galvanized product is widely applied to the industries of pipe making, automobiles, household appliances and the like, so that the variety and the structure of the steel are enriched. The special brand of the stainless steel galvanized product has wide market prospect and obtains considerable economic benefit.
Drawings
Fig. 1 is a schematic view of the present invention.
Detailed Description
The present invention will be further described with reference to the following detailed description.
The traditional galvanized sheet with patterns is galvanized by a cold-rolled substrate or a hot substrate, and is heated by open fire or coal gas, the annealing temperature is more than or equal to 680 ℃, and the strip steel is subjected to recrystallization annealing. The utility model discloses a hot base plate has colored galvanizing after pickling, and the heating furnace adopts induction coil heating, and heating temperature is low, before going into the zinc pot, belted steel does not have annealing recrystallization, is an internal brand-new unit equipment.
The equipment used in each embodiment of the utility model is a continuous pickling leveling galvanizing combined unit, and the structure combination is as follows: a feeding operation unit, a phosphorus breaking operation unit, an acid washing and rinsing operation unit, a leveling operation unit, a heating operation unit, a galvanizing operation unit, a cooling operation unit, a finishing operation unit, a pulling and straightening operation unit, a passivating operation unit and a discharging operation unit which are sequentially connected through a conveying device. The selection of the right conveyor relative to the different equipments is a routine choice in steel production and will not be described again here.
Some products need the finishing, can add the finishing process between cooling and draw the finishing process, also add the finishing machine in foretell equipment promptly, as shown in figure 1, the utility model discloses the concrete process flow of finishing is: the uncoiler 1 → the inlet shear 2 → the welder 3 → the inlet loop 4 → the phosphorus breaker 5 → the pickling tank 6 → the rinsing section 7 → the dryer 8 → the leveler 9 → the induction heating furnace 10 → the thermal tensioning chamber 11 → the zinc-plated pot 12 → the air knife 13 → the cooling fan 14 → the water quenching tank 15 → the finisher 16 → the withdrawal and straightening machine 17 → the roll coating passivation device 18 → the outlet loop 19 → the inspection table 20 → the outlet shear 21 → the coiler 22.
The specific process functions are as follows:
1. a feeding operation unit: comprises an uncoiler 1, an inlet shear 2, a welding machine 3 and an inlet loop 4. An uncoiler 1 for uncoiling a steel coil; an entrance shear 2: the defects of the head and the tail of the strip steel are cut off, and the welding of a welding machine is facilitated; the welding machine 3 is used for welding the two steel coils to ensure the continuous production of the unit; the inlet loop 4 stores strip steel to realize the unit upgrading speed production;
2. a phosphorus breaking operation unit: comprises a phosphorus breaking machine 5 which breaks the iron scale on the surface of the raw material strip steel, improves the pickling effect and improves the shape of the raw material strip steel;
3. acid washing and rinsing operation unit: comprises a pickling tank 6, a rinsing section 7 and a dryer 8. The pickling tank 6 specifically comprises two pickling tanks for washing away iron scales on the surface of the strip steel, and the total length of the pickling tanks is 50 meters; the rinsing section is specifically a 5-level rinsing section and is used for washing away residual Cl ions and impurities on the surface of the strip steel, so that the surface cleanliness is improved, and the galvanization is facilitated; in the optimized scheme, a high-pressure washing device can be arranged behind the last rinsing section, so that the cleaning effect of the surface of the strip steel can be further improved; and (3) a dryer 8: drying the water on the surface of the strip steel from the rinsing tank to prevent corrosion;
4. a leveling operation unit: the strip steel galvanizing device comprises a temper mill 9, wherein the strip shape of the strip steel is improved, the roughness of the surface of the raw material strip steel is improved through the roughness of a working roll, and the strip steel is favorably galvanized;
5. a heating operation unit: comprises an induction heating furnace 10 and a heat stretching chamber 11 which are connected in sequence. The induction heating furnace 10 heats the strip steel through an induction coil, and the maximum temperature is 550 ℃; the thermal expansion chamber 11 is used for preserving the heat of the strip steel through an electric radiation tube, the highest temperature is 450 ℃, and the heat of the strip steel is preserved, so that the strip steel is kept in a certain temperature range before entering a zinc pot; the recrystallization annealing of the strip steel does not occur in the furnace, so that the energy consumption is reduced;
6. a galvanizing operation unit: comprises a zinc plating pot 12 and an air knife 13; galvanizing is carried out by controlling the temperature of a zinc pot, the components of zinc liquid, three rollers, six arms, an air knife and other process parameters;
7. a cooling operation unit: comprises a cooling fan 14 and a water quenching tank 15; cooling the surface temperature of the galvanized strip steel, protecting the process rubber roller, and influencing the subsequent passivation surface treatment process and passivation effect if the surface temperature of the strip steel is too high;
8. a finishing operation unit: including a finisher 16. The method is used for improving the shape and the surface structure of the galvanized strip steel; for unfinished products, the process steps and the work cell may be eliminated. In an optimized scheme, a group of intermediate loops can be arranged between the water quenching tank 15 and the finisher 16.
9. A pulling and straightening operation unit: including a withdrawal and straightening unit 17. And selecting a single-roller box or a double-roller box according to the thickness and the strength grade of the strip steel. The thick plate can be pulled and straightened by two rollers to improve the shape.
10. A passivation operation unit: comprises a roll-coating passivation device 18; the surface of the strip steel is provided with a layer of protective film through passivation, so that the effects of corrosion resistance and rust resistance are achieved;
11. a discharging operation unit: comprises an outlet loop 19, an inspection platform 20, an outlet shear 21 and a coiling machine 22; the outlet loop 19 stores strip steel to realize the unit upgrading speed production; 1, an inspection table 20 for inspecting the surface of the strip steel by staff; an outlet shear 21: shearing the strip steel and coiling the strip steel according to the weight; the coiler 22: and coiling the strip steel.
Each of the above-mentioned apparatuses is a facility commonly used in the existing steel production, and therefore, the specific structure of the single equipment is not described herein.
The technical key elements of the utility model are characterized in that:
1. the utility model discloses a pickling hot-galvanize continuous unit is a continuous unit and produces the line, compares with traditional cold rolling base plate and hot rolling base plate galvanizing process, has lacked the rolling process link of rolling mill, reduces cold rolling base plate or hot base pickling product to the link of transporting to the zinc-plated raw material storehouse simultaneously, shortens production cycle, improves production efficiency, reduction in production cost by a wide margin.
2. The utility model discloses galvanizing furnace of pickling hot galvanizing continuous unit adopts induction coil heating, and the highest heating temperature in the stove is 550 ℃, and belted steel does not take place the recrystallization. Compared with the traditional galvanizing process by open fire heating or coal gas heating, the energy consumption is low and the cost is greatly reduced.
3. The utility model discloses a direct zinc-plating behind the pickling of hot rolling base plate, only two descaling baths, descaling bath total length 50 meters has very big difference with traditional pickling process, and traditional pickling process generally has 3 or 4 descaling baths, and the descaling bath total length is more than 100 meters. The pickling process and the rinsing process of the utility model have great influence on the quality of the subsequent flower-shaped galvanized product.
4. Because ESP thick specification raw material plate shape is poor, for the strip steel plate shape after guaranteeing into the plate shape and the zinc-plating of zinc pot belted steel, the utility model discloses a domestic first two levels, go into the levelling machine equipment of increase before the zinc-plating stove behind the pickling, be equipped with a burnishing machine equipment after the zinc-plating, increase one before the passivation simultaneously and draw straightening equipment, realized the production with the different intensity rank zinc-plating products of raw materials.
5. The utility model discloses the galvanizing furnace of line is produced in the zinc-plating is induction heating furnace, and the nuclear core heat of belted steel has the difference that strengthens with traditional annealing galvanizing line comparison: the furnace characteristics of the annealing galvanized wire are as follows: the furnace length is about 100 meters, the heating section is long, the hearth temperature is high, the core heat before the strip steel reaches the cooling fan is very large, so the plate temperature needs to be reduced to be very low, and when the strip steel is close to the zinc liquid, the plate temperature is raised to be proper temperature (namely 15-20 ℃ higher than the temperature of the zinc liquid) due to the outward diffusion of the core heat. The furnace of the production line of the utility model is induction heating, the surface of the strip steel is heated to a high temperature by about 100 microns, but because of the effect of heat conduction, the temperature of the strip steel is reduced a lot before the strip steel reaches the cooling fan, and the power of the subsequent electric radiant tube is small and only plays the role of heat preservation, so the temperature of entering the boiler of the strip steel is relatively high.
Examples 1-4 see the parameter tables for parameter control.
Extended parameter tables for various embodiments
The hot galvanizing products of the embodiments 1 to 4 produced by the process at present:
1. the mechanical properties of the product are as follows: the yield strength of the hot dip galvanizing products of the embodiments 1 to 4 is 290-320MPa, the tensile strength is 380-420MPa, the elongation is more than 26 percent, and the mechanical property is excellent and is similar to the properties of two comparison groups.
2. And (3) galvanizing effect: the smoke experiment in 72 hours is qualified in each embodiment group, the white rust area is less than or equal to 5 percent, and the industrial standard can be met.
The utility model discloses the product quality of unit production can reach traditional technical requirement completely. The same product quality, but saves the process steps and time, reduces the equipment purchase and production cost, and has great economic value.
It should be noted that while the invention has been described in detail with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various obvious changes can be made therein without departing from the spirit and scope of the invention.
Claims (7)
1. A continuous pickling leveling galvanizing combined unit is characterized by comprising a feeding operation unit, a phosphorus breaking operation unit, a pickling and rinsing operation unit, a leveling operation unit, a heating operation unit, a galvanizing operation unit, a cooling operation unit, a straightening operation unit, a passivating operation unit and a discharging operation unit which are sequentially connected through a conveying device; wherein the phosphorus breaking operation unit comprises a phosphorus breaking machine; the pickling and rinsing operation unit comprises a pickling tank, a rinsing section and a dryer; the leveling operation unit comprises a leveling machine; the heating operation unit comprises an induction heating furnace and a hot stretching chamber; the galvanizing operation unit comprises a galvanizing pot and an air knife; the withdrawal and straightening operation unit comprises a withdrawal and straightening machine; the passivation operation unit comprises a roller coating passivation device.
2. The continuous pickling leveling galvanizing combination set according to claim 1, characterized in that: the feeding operation unit comprises an uncoiler, an inlet shear, a welding machine and an inlet loop.
3. The continuous pickling leveling galvanizing combination set according to claim 1, characterized in that: the pickling tanks are two pickling tanks, and the total length is 50 meters; the rinsing section is a 5-stage rinsing section.
4. The continuous pickling leveling galvanizing combination set according to claim 1, characterized in that: the discharging operation unit comprises an outlet loop, an outlet shear and a coiling machine.
5. The continuous pickling leveling galvanizing combination set according to claim 4, characterized in that: an inspection table is also arranged between the outlet loop and the outlet scissors.
6. The continuous pickling leveling galvanizing combination set as claimed in any one of claims 1 to 5, wherein: the polishing machine also comprises a polishing operation unit.
7. The continuous pickling leveling galvanizing combination set according to claim 6, characterized in that: the finishing operation unit comprises a finishing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921434947.8U CN210394491U (en) | 2019-08-31 | 2019-08-31 | Continuous pickling leveling galvanizing combined unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921434947.8U CN210394491U (en) | 2019-08-31 | 2019-08-31 | Continuous pickling leveling galvanizing combined unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210394491U true CN210394491U (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921434947.8U Expired - Fee Related CN210394491U (en) | 2019-08-31 | 2019-08-31 | Continuous pickling leveling galvanizing combined unit |
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| Country | Link |
|---|---|
| CN (1) | CN210394491U (en) |
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2019
- 2019-08-31 CN CN201921434947.8U patent/CN210394491U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200424 |